Home / 87,060.12-130,405.86-72,233.88

Finding the Fourth Proportional to 87,060.12, 130,405.86 and 72,233.88

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Solution

The fourth proportional to 87,060.12, 130,405.86 and 72,233.88 is: 108,197.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,060.12 : 130,405.86 = 72,233.88 : x
  2. Step 2: Convert to fraction form
    87,060.12/130,405.86 = 72,233.88/x
  3. Step 3: Cross multiply
    87,060.12x = 130,405.86 × 72,233.88
  4. Step 4: Simplify right side
    87,060.12x = 9,419,721,242.54
  5. Step 5: Solve for x
    x = 9,419,721,242.54/87,060.12
  6. Step 6: Final answer
    x = 108,197.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.